AP EAMCET202125 Aug 2021Morning ShiftPhysicsElectrostaticsActual
Two insulated charged metallic spheres P and Q of negligible radii have their centres separated by a distance of 60 ~cm . The mutual force of electrostatic repulsion, if the charge on each is 6 10⁻⁷ C is
Options
- A9 10⁻³ ~N
- B2.5 10⁻⁹ ~N
- C5.2 10⁻⁴ ~N
- D9 10⁻⁹ ~N
Correct answer
A. 9 10⁻³ ~N
Step-by-step solution
Given, Q=6 10⁻⁷ C d=60 ~cm =0.6 ~m Force, aligned F= k Q^2 d^2 & = 1 4 ₀ (6 10⁻⁷ ) (0.6)^2 & =9 10^9 10⁻¹⁴ 10^2 & =9 10⁻³ ~N aligned